U.S. Secretary of State Antony Blinken said Monday the time is now to conclude a Gaza ceasefire agreement that would return hostages held by Hamas and bring relief to Palestinian suffering after 10 months of devastating fighting in Gaza.

Blinken’s ninth urgent mission to the Middle East since the conflict began came days after mediators, including the United States, expressed renewed optimism a deal was near. But Hamas has expressed deep dissatisfaction with the latest proposal, and Israel has said there were areas it was unwilling to compromise.